plumiConservation: Edexcel International A Level Biology questions
Every Edexcel International A Level Biology exam question on Conservation (specification points 4.21), 2019–2025, with its mark scheme and examiner’s report.
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Calculations
Q3(c)
The whole paper ↗Q4(a)(i)
The whole paper ↗Q4(a)(ii)
The whole paper ↗Your answerQ4(b)(i)
The whole paper ↗Q4(b)(ii)
The whole paper ↗Q8(a)(ii)
The whole paper ↗Q8(b)(i)
The whole paper ↗Q8(b)(ii)
The whole paper ↗Q8(b)(iii)
The whole paper ↗Q5(a)(ii)
The whole paper ↗Q8(d)
The whole paper ↗Q7(c)(iii)
The whole paper ↗Q8(c)(iii)
The whole paper ↗Q8(b)(i)
The whole paper ↗Q8(b)(iii)
The whole paper ↗Q7(a)
The whole paper ↗Q7(b)(i)
The whole paper ↗Your answerQ7(b)(ii)
The whole paper ↗Q7(b)(iii)
The whole paper ↗Q4(a)(ii)
The whole paper ↗
All 36 questions on Conservation, as a list
- June 2025, AS Unit 2, Q3(c) (2 marks): Seeds from plant species are stored in seed banks. Explain how seeds would be selected for storage in a seed bank. (2)
- June 2025, Unit 4, Q4(a)(i) (1 mark): Calculate the percentage increase in the total number of tigers in the world from 2010 to 2023. (1) Answer %
- June 2025, Unit 4, Q4(a)(ii) (1 mark): Which is the ratio of Bengal tigers to other types of tigers in the world in 2023? (1) A 0.556 : 1 B 0.798 : 1 C 1.253 : 1 D 1 : 1.798
- June 2025, Unit 4, Q4(b)(i) (2 marks): Before the Tiger Action Plan was started, conservation groups had to prove that tigers were present in Bhutan, especially in the mountain regions shown in the s
- June 2025, Unit 4, Q4(b)(ii) (4 marks): Deduce the importance of establishing a tiger corridor in Bhutan for a greater increase in the number and diversity of tigers. Use the information in the first
- January 2025, AS Unit 2, Q8(a)(ii) (1 mark): Conservation programmes resulted in the population of the St Helena plover increasing from 200 adult birds in 2006 to 560 adults in 2016. Calculate the mean rat
- January 2025, AS Unit 2, Q8(b)(i) (2 marks): Describe how this St Helena breeding programme could have been carried out. (2)
- January 2025, AS Unit 2, Q8(b)(ii) (2 marks): Explain one way that young trees could be protected from rabbits. (2)
- January 2025, AS Unit 2, Q8(b)(iii) (4 marks): Scientists have proposed storing seeds from St Helena gumwood trees in seed banks to aid the conservation of this endangered species. Describe how a seed bank w
- October 2024, AS Unit 2, Q5(a)(ii) (2 marks): Give two reasons how education could help conserve the Grandidier’s baobab. (2) 1 2
- October 2024, AS Unit 2, Q8(d) (6 marks): Breeding programmes have been set up for both the Akhal-Teke and Caspian breeds. Sperm samples have been taken from male horses from both the Akhal-Teke and Cas
- June 2024, AS Unit 2, Q7(c)(iii) (3 marks): A study suggested that the genetic diversity of the Malayan tapirs has decreased due to populations being separated from each other. Explain how a captive breed
- June 2024, AS Unit 2, Q8(c)(iii) (3 marks): Species D is an endangered plant species. Explain the processes that could be used by a seed bank to conserve this plant species. (3)
- January 2024, AS Unit 2, Q8(b)(i) (1 mark): Calculate the percentage decrease in the Santa Cruz fox population from 1994 to 2002. (1) Answer %
- January 2024, AS Unit 2, Q8(b)(iii) (4 marks): In 2004, a conservation plan was produced to: • increase the sizes of the Santa Cruz and Santa Catalina fox populations • maintain the genetic diversity of the
- January 2023, AS Unit 2, Q7(a) (2 marks): It is expected that the import of eggplants by France would increase by 1.6% per year. Calculate the expected mass of eggplants imported by France in 2023. Give
- January 2023, AS Unit 2, Q7(b)(i) (1 mark): How many of the varieties tested were categorised as susceptible to the R. solanacearum bacteria? (1) A none B one C two D three
- January 2023, AS Unit 2, Q7(b)(ii) (4 marks): Seed banks contain the seeds of closely related wild plants. Explain how seed banks would prepare, store and assess viability of these seeds. (4)
- January 2023, AS Unit 2, Q7(b)(iii) (4 marks): Explain how scientists could breed new high-yielding varieties of eggplants which are resistant to R. solanacearum bacteria. Use the information in the tables t
- June 2022, Unit 4, Q4(a)(ii) (3 marks): Explain the effect that this could have on the future of this species. (3)
- June 2022, Unit 4, Q4(a)(iii) (2 marks): Suggest how zoos could increase the number of birds in the wild that can sing the songs characteristic of this species. (2)
- January 2022, AS Unit 2, Q7(b) (2 marks): Seed banks often conserve endangered plants by storing samples of their seeds. The seeds are dried and then frozen. Explain the advantages of drying seeds befor
- January 2022, AS Unit 2, Q7(c)(iii) (6 marks): Discuss the suggestions, proposed by these scientists, for conserving the titan arum. (6)
- January 2022, AS Unit 2, Q9(c)(i) (1 mark): Calculate the percentage of female 10’s offspring that were fathered by male B. (1) Answer %
- January 2022, AS Unit 2, Q9(c)(ii) (2 marks): The wild population of C. hoodensis is now 1800 individuals. Calculate the percentage increase in the wild population of C. hoodensis tortoises. Give your answe
- January 2022, AS Unit 2, Q9(c)(iii) (3 marks): A zoo tested its captive‑bred giant tortoise and determined that it was a C. hoodensis tortoise. Explain how the zoo determined that its giant tortoise was a C.
- June 2021, AS Unit 2, Q4(a)(i) (2 marks): Describe the effect of length of time in storage on the germination of these seeds. (2)
- June 2021, AS Unit 2, Q4(a)(ii) (4 marks): Two of the methods used in seed banks are: • store seeds from many different plants of the same species, instead of many seeds from just one plant • regularly g
- June 2021, AS Unit 3, Q2(a)(i) (3 marks): Describe how seeds are treated and then stored in a seed bank. (3)
- January 2021, AS Unit 2, Q8(d) (6 marks): Describe the role of zoos in the conservation of endangered Sehuencas water frogs. (6)
- October 2020, AS Unit 2, Q8(d) (6 marks): Scientists have suggested that the Tristan albatross could be conserved. Some suggestions are conservation strategies on the island where the mice are found. So
- January 2020, AS Unit 2, Q8(c)(i) (2 marks): Calculate the number of female crocodiles that would develop from 350 eggs incubated at 32 °C. (2) Answer
- January 2020, AS Unit 2, Q8(c)(ii) (6 marks): Explain how this project could increase the number of crocodiles rapidly, without reducing the genetic diversity of future populations in Bhitarkanika National
- June 2019, AS Unit 2, Q6(b) (2 marks): Suggest two reasons why seed banks store seeds instead of growing whole plants. (2) 1 2
- June 2019, AS Unit 2, Q6(c)(i) (2 marks): Calculate the percentage increase in the mass of bananas imported by China. (2) Answer %
- June 2019, AS Unit 2, Q8(b) (6 marks): Some scientists were concerned that the low numbers of beavers reintroduced into Scotland from Norway could affect the genetic diversity of the population in Sc
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